:root{--header-offset:122px;--primary:#E53935;--secondary:#FF5A4F;--text-main:#333333;--card-bg:#FFFFFF;--bg-main:#F5F7FA;--border:#E0E0E0;--btn-gradient:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%)}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:#FFFFFF;box-shadow:0 2px 15px rgba(0,0,0,0.15)}.header-top{background:#E53935;width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:14px 24px;gap:20px}.logo{font-size:30px;font-weight:900;color:#FFFFFF;text-decoration:none;letter-spacing:-1px;font-style:italic;line-height:1.2;white-space:nowrap}.logo:hover{color:#FFD700}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:50px;font-size:14px;font-weight:700;text-decoration:none;cursor:pointer;border:none;min-height:42px;line-height:1.2;white-space:nowrap}.btn-register{background:var(--btn-gradient);color:#FFFFFF;box-shadow:0 4px 12px rgba(229,57,53,0.4)}.btn-register:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(229,57,53,0.5)}.btn-login{background:#FFFFFF;color:#E53935;box-shadow:0 2px 8px rgba(0,0,0,0.15)}.btn-login:hover{background:#FFF5F5;transform:translateY(-2px)}.main-nav{background:#FFFFFF;width:100%;display:flex;border-top:2px solid rgba(229,57,53,0.15)}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:8px 24px;width:100%}.mobile-logo-row{display:none}.nav-menu{list-style:none;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;margin:0;padding:0;width:100%;flex-wrap:wrap}.nav-menu li{margin:0;padding:0}.nav-link{display:block;padding:10px 16px;color:#333333;text-decoration:none;font-weight:600;font-size:16px;border-radius:6px;transition:all 0.3s ease}.nav-link:hover{color:#E53935;background:rgba(229,57,53,0.08)}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}body{padding-top:var(--header-offset);min-height:100vh;overflow-x:hidden}.site-footer{background:#1A1A1A;color:#FFFFFF;font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;margin-top:60px}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:50px 24px 30px}.footer-logo{font-size:32px;font-weight:900;color:#FFFFFF;text-decoration:none;font-style:italic;letter-spacing:-1px}.footer-desc{color:#B0B0B0;font-size:14px;line-height:1.7;margin:16px 0}.footer-note{color:#888888;font-size:13px}.footer-title{color:#FFFFFF;font-size:18px;font-weight:700;margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid var(--secondary);display:inline-block}.footer-nav{list-style:none;padding:0;margin:0}.footer-nav li{margin-bottom:12px}.footer-nav a{color:#B0B0B0;text-decoration:none;font-size:15px;transition:color 0.3s ease}.footer-nav a:hover{color:var(--secondary)}.footer-bottom{border-top:1px solid #333333;padding:18px 24px;text-align:center;background:#111111}.footer-bottom p{color:#888888;font-size:14px;margin:0}.footer-bottom a{color:#B0B0B0;text-decoration:none;transition:color 0.3s ease}.footer-bottom a:hover{color:var(--secondary)}@media(max-width:768px){:root{--header-offset:146px}.site-header{box-shadow:0 2px 10px rgba(0,0,0,0.1)}.header-container{width:100%;max-width:none;padding:12px 15px;gap:10px}.header-top{position:relative}.desktop-nav-buttons{display:none}.main-nav{display:none;position:fixed;top:0;left:0;width:78%;max-width:340px;height:100vh;height:100dvh;background:#FFFFFF;flex-direction:column;justify-content:flex-start;align-items:stretch;transform:translateX(-100%);transition:transform 0.3s ease;z-index:1002;box-shadow:4px 0 20px rgba(0,0,0,0.15);border-top:none}.main-nav.active{display:block;transform:translateX(0)}.mobile-logo-row{display:flex;flex-direction:column;align-items:center;gap:12px;padding:15px}.nav-container{flex-direction:column;align-items:stretch;padding:0;width:100%;max-width:none}.nav-container .nav-menu{flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;padding:15px;width:100%;padding-top:8px}.nav-container .nav-menu li{border-bottom:1px solid #F0F0F0}.nav-container .nav-menu li:last-child{border-bottom:none}.nav-container .nav-link{padding:14px 12px;font-size:15px;text-align:left;border-radius:0}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;width:42px;height:42px;background:transparent;border:none;cursor:pointer;padding:6px;z-index:1003}.hamburger-menu span{display:block;width:26px;height:3px;background:#FFFFFF;margin:3px 0;border-radius:2px;transition:all 0.3s ease}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.mobile-logo{display:block;font-size:26px}.header-actions{display:none;flex-direction:row;justify-content:center;gap:10px;padding:0 15px 15px;flex-wrap:wrap}.header-actions .btn{padding:10px 18px;font-size:13px}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:1001;transition:opacity 0.3s ease}.mobile-menu-overlay.active{display:block;opacity:1}.footer-container{grid-template-columns:1fr;gap:24px;padding:35px 20px 20px}.footer-bottom{padding:15px}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}body.no-scroll{overflow:hidden}.footer-logo{font-size:28px}.footer-title{font-size:16px}.footer-nav a{font-size:14px}.footer-desc{font-size:13px}.footer-bottom p{font-size:13px}}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}